Pipe coupling



sept 111929,.

w. s.. BACHE 1,728,588

PIPE couPLING Filed April 24, 1928 fluor/M411 gwuento/c Patented Sept. 17, 1929 UNITED STATES PATENT AOFFICE PIPE ooUPniNo Application ined April e4,

This invention relates to pipe couplings of that type wherein two joints of pipe are disposed in alignment with each other and a i separable couplingy is used surrounding the joints and clamped upon the pipe.

The general object ot the present invention is to provide a pipe coupling ot this character which is very simple, which may be readily applied or disconnected, and which will hold lo the two pipe sections connected in alignment with each other and joined by means ot a rubber casket or sleeve.

My invention is illustrated in the accom panying drawing, wherein n Figure 1 is an elevation of a coupling con-` structed in accordance with my invention.

Figure 2 is a longitudinal sectional. view ot a coupling constructed in accordance with my invention.

Figure 3 is a section on the line 3-3 of Figure 2.

Referring' to this drawing, A-A designate the two sections ot the pipe to be oined and B a rubber gasket into which the ends of the pipe sections A are to kloe slipped. My coupling comprises a. sleeve which is illustrated as formed of four sections 11. These sections are alike. Each section is rabbeted at 12 upon its inner tace at one end and at its other end is 'formed with a tongue 13 to engage with this rabbet. Each section is Atermed with a longitudinal series ot cams 14, these cams tapering lgradually to the surface ot the section each at its inner end and having' its large end disposed at the tongued end of the section.

These sections 11 are disposed over the ket B, as shown in Figure 3. and in order to hold the sections in place there is provided the outer sleevel or clamp formed ot two scctions 15 and 16. `The section 16 is formed along its longitudinal edges with beads 17, while the section 15at its longitudinal edges is formed with the outwardly curved and then inwardly turned coacting beads 18. These beads 17 are rounded upon their inner 'faces and7 ot course, are protuberant so that they7 are adapted to engage with and cain aaainst two ot the cams 14 ot the sleeve 10. Intermediate the lateral edges of the sections 15 192s. serial No. 272,517@

and 16. each of these sections is formed with the longitudinallyextending, inwardly protuberant boss 19 which is also adapted to cam against one ot the cams 14. yEach of th e cams 14 is formed upon its outer tace with ya slight recess orseat 20 in which the beads 17 and the bosses 19 are adaptedto engage.

lt will be understood that the bosses 19 and the beads 17,-as regards their inner faces, constitute inwardly extending protuberances adapted to engafre the cams '14 and when pressed home to the seats 2O acting to "force the sections 11 inward against the rubber gasket B `and clamp them in place thereon. i

It willbeseen tromFigureB that the section 15 has sliding engagement with the sec# tion 16 so that one section may be'put in rplace andthen the other section slid into'engagemert with the first' named section and then the sections rotated to cause the protuberances to comeagainst the cams 14, this camming action causing` the sections `11 to be pressed firmly. in against the rubber gasket and securely hold the rubber gasket to the pipes A and hold the pipes inalifgnmcnt with each other, thus locking or binding together two pieces of plain-ended pipe.

hile I have illustratedr certain details of construction and arrangementot parts as will appear more' fully hereinafter.r I do not wish to limited to this modifications inilnjht be made without departing from, the spirit ot the invention as defined in the appended claims.

I claim f n 1. A pipe coupling of the character described comprising an inner sleeve formed `in a plurality of sections. each section having; a tongue at one end and a rabbet at the other, the outer face of each section being' formed with a plurality otcircumterentially extending routwardly protuberant cams, and an y out-er sleeve composed of two sections having longitudinal sliding engagement with each other, each of said outer sleeve sectionsbeingr formed with inwardly protruding portions adapted to engage said cams when thel outer sleeve is rotated relative to the inner sleeve 'to clamp the inner sections upon the pipe.

2. A pipe coupling of thecharacter dei@ scribed comprising an inner sleeve formed in ico a plurality of sections, euch section having u tongue at one end and a rabbet at the other, the outer face of each section being formed with a plurality of outwardly protuberant cams, and an outer sleeve composed of two sections having longitudinal sliding engagement with each other, each of said outer sleeve sections being formed with inwardly protruding rounded portions adapted to engage said cams when the outervsleeve is rotated relative to the inner sleeve to clamp the inner sections upon the pipe, each of said cams being formed with a sea-t to receive the corresponding protuberant portion on the outer sleeve.

3. A pipe coupling of the character de! scribed comprising an inner sleeve formed of a plurality of longitudinally extending sections, the adjoining edges yof the sections being formed to provide rabbeted joints, the outer tace of each section being formed with a plurality of cams, and an outer sleeve formed in two sections, the outer edges of one section being formed with beads, the beads protruding inwardly and outwardly, the other section of the outer sleeve being formed with hollow beads rLdapted to have longitudinal sliding engagement with the beads of the other section, euch ofsaid sections of the outer sleeve intermediate its lateral edges being formed with inwardly protruding bosses, the irst named beads and said bosses being adapted to engage the cams to force the sections inward upon a pipe.

In testimony whereof hereunto aliix my signature.

WILLIAM S. BAGHE. 

